French Onion Soup
Deeply caramelized onions simmered in rich beef broth, topped with a crusty crouton and bubbling Gruyère.
Details
Ingredients
- 4 large yellow onions, thinly sliced
- 3 tbsp butter
- 1 tbsp olive oil
- 1 tsp sugar
- 1/2 cup dry white wine
- 4 cups beef broth
- 2 cups chicken broth
- 2 sprigs fresh thyme
- 1 bay leaf
- 4 thick slices French bread, toasted
- 2 cups shredded Gruyère cheese
- Salt and pepper to taste
Instructions
- 1
Melt butter with olive oil in a large Dutch oven over medium heat. Add sliced onions and sugar.
- 2
Cook onions, stirring every few minutes, for 45-55 minutes until they are deep golden brown and very soft. Don't rush this step.
- 3
Add white wine and scrape up the fond from the bottom. Cook until wine evaporates.
- 4
Add beef broth, chicken broth, thyme, and bay leaf. Simmer 20 minutes. Season with salt and pepper.
- 5
Ladle soup into oven-safe crocks. Place a toasted bread slice on each and top with a generous mound of Gruyère.
- 6
Broil 3-4 minutes until the cheese is golden, bubbly, and draping over the sides of the crock.
About This Recipe
Few dishes evoke the cozy charm of a Parisian bistro quite like French Onion Soup, or *Soupe à l'oignon gratinée*. Rooted in humble origins, often served as a fortifying breakfast to market workers, this classic has been elevated to an iconic status, beloved for its deep, comforting flavors. What truly makes this soup sing is the meticulous caramelization of the onions. This isn't just browning; it's a slow, patient transformation, coaxing out the natural sugars until the onions are a rich, burnished mahogany, creating a profound sweetness and umami foundation. Deglazing with dry white wine adds a crucial layer of acidity and complexity, while a combination of beef and chicken broths provides a balanced, savory liquid base. The final flourish, a thick slice of toasted French bread submerged and blanketed under a generous amount of bubbling, golden-brown Gruyère, is non-negotiable, offering a delightful textural contrast and creamy finish. It's a testament to how simple ingredients, handled with care, can yield extraordinary results, making it perfect as a hearty starter or a soul-warming meal on its own.
Tips & Tricks
- • Patience is paramount for perfectly caramelized onions. Resist the urge to rush them; cooking over medium-low heat for 30-45 minutes, stirring frequently, is essential for developing that deep, complex flavor profile.
- • For an extra layer of richness, a splash of brandy or Cognac can be added after deglazing with white wine, allowing it to cook off for a minute before adding the broths.
- • The soup base (before adding bread and cheese) can be made 1-2 days in advance and stored in the refrigerator. Reheat gently on the stovetop before ladling into oven-safe bowls, topping, and broiling.
- • Serve French Onion Soup as a luxurious starter to a steak frites dinner, or as a comforting light lunch paired with a crisp, bitter green salad dressed simply with a vinaigrette to cut through its richness.
Nutrition Facts
Per serving (approximate)